original version is written in <a href="http://nodejs.org">Node.js</a> and is available
for deployment to server environments via <a href="https://npmjs.org/package/qm">NPM</a>.
A new "teaching version" written in <a href="http://www.ruby-lang.org">Ruby</a> is also
-available, and it will eventually be installable
+available, and it will eventually be installable a
<p>I am now revising the first of several manuscripts I have been preparing for